Professor Tet Yap is a Consultant Andrological Surgeon at Guy’s & St Thomas’ NHS Foundation Trust and Professor of Urology at King’s College London. He completed his medical training at Cambridge in and undertook higher surgical training in the North Thames region, including a research doctorate at University College London and appointments at Great Ormond Street Hospital and St Bartholomew's & St George's Hospital, winning prizes including the George Drexler Prize & the FEBU prize for both academic and surgical work.

He has contributed to the development of complex benign andrological services in South London and now leads regional andrological & male infertility services at Guy’s & St Thomas’. His work brings together multidisciplinary clinical care and translational research, including establishing the world’s first dedicated multidisciplinary clinic for Klinefelter syndrome.

He serves as a Specialty Advisor to both EurOGEN and the European Organisation for Research and Treatment of Cancer (EORTC) research groups and organisations such as Movember, the Klinefelter Association (KSA) and The Association for X and Y Chromosome Variations (AXYS).

He also founded the King’s College London Health Inequalities Research Hub, an initiative dedicated to advancing equity in care for sexual, gender, ethnic and culturally diverse communities, including within prostate cancer